keep an eye on your water levels if you've killed all them aiptasia at once!!
It was only about 10 flowers of aiptasia, and I did a PWC the next day. All the levels look good and the coral across the way is doing fine. One polyp took a shot of Aip X and withered up...but the rest are looking all good.
Thanks for the advice though - was my first time trying aip X, so it is definitely appreciated!!!